Precum; she's going to jerk off again (she notices you)

Original Author: Mazomune

"W-Will! Is that you?"

You look up in horror as you see that your big sister is staring back at you. She has finally noticed your presence, and all kinds of thoughts begin to run through your mind:

Will she be angry with you for perving on her?

Will she tell your mother?

Will she kill you? She could crush you with her bare hands if she wanted to.

You look into Kim's face, hoping to see some sign as to what she might do. Her eyes widen and you begin to notice what looks like a sadistic smile on her face. She doesn't seem angry, but this definitely isn't good.

"He, heh heh, Will, I'm going to use you, you dirty little pervert."

Kim winks at you as she speaks, and begins to play with you, while all of your body except your head is underneath her foreskin. She keeps eye contact with you as she starts to slowly fap with you, and you're pressed into the firm, but malleable skin of her glans. You're stuck to the inside of her foreskin and with her glans well-lubricated your body acts like a series of stimulating beads on her girlcock.

"You feel good down there Will. This is much better than fapping normally, and I don't think I can go back. Maybe I'll keep using you as a toy from now on?"

Kim giggles girlishly as your eyes widen in terror. Is this going to be your life from now on? Since Kim is so much bigger than you, is there anything you can really do to stop her? Is there anyone you could even call for help?

"Ah, Will! You feel so good in my dick~"

You can feel the heat of your sister's girlcock and feel her heartbeat; it's throbbing more and more quickly the longer that she faps with you. Kim keeps groaning harder and harder and she grips you so hard that you feel like you might be crushed to **** in her dick. Kim is wanking furiously without caring about your safety whatsoever and you think she might not even be aware of you any more. As she keeps fapping, her moans begin to turn into shrieks of pleasure and your body is put under ever greater pressure.

"Oh God, I'm gonna cum! I gonna cuuummmmm!"

You feel the boiling hot jizz spray across the back of your head as your sister ejaculates in the shower. The **** of the stream is so great that it almost knocks you ****, and you barely notice that Kim is relieving the pressure on your body as her huge dick is slowly becoming softer. After an unknown amount of time, both you and Kim regain your awareness of your surroundings.

"Heh heh, Will, that was so much fun! Now, I think that I'll..."